X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: <13brv3@bellsouth.net> Received: from imf25aec.mail.bellsouth.net ([205.152.59.73] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 1011477 for flyrotary@lancaironline.net; Thu, 23 Jun 2005 13:42:44 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.73; envelope-from=13brv3@bellsouth.net Received: from ibm69aec.bellsouth.net ([65.6.194.9]) by imf25aec.mail.bellsouth.net with ESMTP id <20050623174154.BTAZ8692.imf25aec.mail.bellsouth.net@ibm69aec.bellsouth.net> for ; Thu, 23 Jun 2005 13:41:54 -0400 Received: from rd ([65.6.194.9]) by ibm69aec.bellsouth.net with ESMTP id <20050623174153.ILO13045.ibm69aec.bellsouth.net@rd> for ; Thu, 23 Jun 2005 13:41:53 -0400 From: "Russell Duffy" <13brv3@bellsouth.net> To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: PP debate was Re: Single PP HP? Date: Thu, 23 Jun 2005 12:41:54 -0500 Message-ID: <007a01c5781a$d8749910$6101a8c0@rd> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_007B_01C577F0.EF9E9110" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527 In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_007B_01C577F0.EF9E9110 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit What should I expect for horsepower on a 13b NA with Mazdatrix street porting at 7500RPM? Georges B. FWIW, when Bruce re-worked my engine originally, he "estimated" 200 HP at 6200 rpm, and 230 HP at 7500. That estimate was based on the combination of parts (89-91 turbo housings, 9.7 rotors, street port) compared to what he's dynoed in the past. I'd be willing to bet that's a little optimistic, but until I get a fuel flow reading that's less than a factor of 10 off, I won't know. Cheers, Rusty (old 6-port housings ready to be filled with epoxy) ------=_NextPart_000_007B_01C577F0.EF9E9110 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message

 What should I expect for horsepower on a 13b NA = with=20 Mazdatrix street porting at 7500RPM?
Georges B.

FWIW, when Bruce re-worked my = engine=20 originally, he "estimated" 200 HP at 6200 rpm, and 230 HP at = 7500.  =20 That estimate was based on the combination of parts (89-91 turbo = housings, 9.7=20 rotors, street port) compared to what he's dynoed in the past.  I'd = be=20 willing to bet that's a little optimistic, but until I get = a fuel flow=20 reading that's less than a factor of 10 off, I won't know.  =

Cheers,

Rusty (old 6-port housings ready = to be filled=20 with epoxy) 

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